
Good question! You can get a count (and more) if you go to this page: Other blogs and websites on Smart People I Know.
WordPress blogs are just part of the count; there’s also tumblrs, web sites, and social media accounts too. Some of them are active. Others are projects I’ve started and either completed or hit a dead end.
I find tumblrs are especially good for projects, which is why I started doing small creative projects with them. Some blogs are meant to be ongoing, but some times it’s nice to pick a topic or area you want to go deeper on for at least a little while before ending it. Plus, tumblrs have a lot of different themes, which makes it easier to create a special microsite. You can make microsites using other technology too, but I think tumblr is a good fit for me in that regard.
I likely have some other blogs and sites I forgot about. I am sure there’s some Blogger sites I’ve missed. But that page accounts for most of the ones I have had an interest in.